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Troubleshooting
If the solutions listed here do not solve your problem, contact your service provider.
Before calling your service provider, try pressing the Reset button on the rear panel of the SR820ac.
Please note, if you press the Reset button, you will lose all your custom configuration settings, including
Firewall and Advanced settings. Your service provider may ask for the front panel LED status; see Front‐
Panel LEDs and Error Conditions.
Solutions
Table 1 – Troubleshooting Solutions
Problem
Power light is off
Cannot send or
receive data
Wireless client(s) cannot send
or receive data
Slow wireless transmission speed
Check that the SR820ac is properly plugged into the electrical outlet.
Check that the electrical outlet is working.
On the front panel, note the status of the LEDs and refer to Front‐Panel LEDs
and Error Conditions to identify the error. If you have cable TV, check that
the TV is working and the picture is clear. If you cannot receive regular TV
channels, the data service will not function.
Check the coaxial cable at the SR820ac and wall outlet. Hand‐tighten, if
necessary.
Check the IP address.
Check that the Ethernet cable is properly connected to the SR820ac and
the computer.
If a device is connected via the Ethernet port, verify connectivity by checking
the LINK LEDs on the rear panel.
Perform the first four checks in "Cannot send or receive data."
Check the Security Mode setting on the Wireless Security Page:
If you enabled WPA and configured a passphrase on the SR820ac, be sure
each affected wireless client has the identical passphrase. If this does not
solve the problem, check whether the wireless client supports WPA.
If you enabled WEP and configured a key on the SR820ac, be sure each
affected wireless client has the identical WEP key. If this does not solve
the problem, check whether the client's wireless adapter supports the
type of WEP key configured on the SR820ac.
To temporarily eliminate the Security Mode as a potential issue, disable
security.
After resolving your problem, be sure to re‐enable wireless security.
On the Wireless Access Control Page, be sure the MAC address for each
affected wireless client is correctly listed.
On the Wireless Primary Network Page, check whether the WPA Encryption
Possible Solution
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